Glossary of terms used in a decorators world.There are 108 entries in this glossary.
|PIR Motion Detector||
A Passive Infrared sensor (PIR sensor) is an electronic device that measures infrared (IR) light radiating from objects in its field of view. PIR sensors are often used in the construction of PIR-based motion detectors. Apparent motion is detected when an infrared source with one temperature, such as a human, passes in front of an infrared source with another temperature, such as a wall. All objects above absolute zero emit energy in the form of radiation. Usually infrared radiation is invisible to the human eye but can be detected by electronic devices designed for such a purpose. The term passive in this instance means that the PIR device does not emit an infrared beam but merely passively accepts incoming infrared radiation. “Infra” meaning below our ability to detect it visually, and “Red” because this color represents the lowest energy level that our eyes can sense before it becomes invisible. Thus, infrared means below the energy level of the color red, and applies to many sources of invisible energy.
PIR detector for use in alarm systems. Lens covers area up 45ft X 45ft (90deg. Spread). Internal terminal strip for 12V/15mA DC power (9-16VDC), NC alarm contacts & tamper switch. Selectable 1-2 pulse count. Internal red "walk" LED can be disabled. Indoor use.
This motion detector can be connected to and powered by a CTB16D or a CTB08D controller. Motion will then activate the controller when in Standalone mode.